https://github.com/GITenberg/
GITenberg
Project GITenberg is a Free and Open, Collaborative, Trackable and Scriptable digital library. It leverages the power of the Git version control system and the collaborative potential of Github to make books more open.https://gitenberg.github.io/
Currently there are over 20,000 some odd books in GITenberg.
a collaborative, trackable, scriptable digital library using Git